China is a typical country with water shortage, and the contradiction between water supply and demand has become a key factor restricting its economic development. In order to further alleviate the social problem of urban water shortage, the development of urban water reuse has been paid more and more attention. First, the reuse feasibility of low quality water such as reclaimed water and rainwater were discussed from the perspective of water quality, by comparing with drinking water, and combining with different water quality requirements of water resource utilization forms such as urban miscellaneous water, agricultural irrigation water and industrial cooling water. Second, from the perspective of water quantity, by calculating the Alternative Recycling Water（Qt）, available reclaimed rainwater(Qy), available reclaimed sewage(Qz), real reclaimed rainwater(Qy1), real reclaimed sewage (Qz1) and real reclaimed water(Qavail1), we analyzed the supply and demand relationship of reuse water in urban water consumption in several typical water-shortage cities in China. The results showed that urban reclaimed sewage-water and rainwater have a very good substitution effect on all kinds of non-contact water in the city. At present, the urban demand for reclaimed water is much higher than the supply of reclaimed water, and there is a great room for development. Finally, the utilization prospect and trend of urban water use of reclaimed sewage-water and rainwater are analyzed, and the development demand of rainwater-sewage resources and economy is put forward based on the current development status of urban rainwater-sewage collection.